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A power battery pack temperature adjustment device and control system

A technology for temperature adjustment device and power battery pack, which is applied in battery/fuel cell control device, electric vehicle, transportation and packaging, etc. , unbalanced temperature adjustment of battery cells, etc., to achieve the effect of flexible and convenient use, balanced and consistent temperature adjustment, and high temperature adjustment efficiency

Active Publication Date: 2022-06-24
河南工学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using cylindrical battery cells to assemble in series and parallel to form a power battery pack is a mainstream structural form of power batteries for electric vehicles at present; because power battery packs often require high-current charging and discharging, they will be accompanied by a large amount of heat. The temperature of the power battery pack rises sharply. If the temperature is too high, it will affect the charging and discharging performance of the power battery, and even cause dangers such as combustion and explosion. The liquid-cooled heat dissipation method has a better effect. Although the existing power battery pack liquid-cooled heat dissipation device can control the temperature within the target temperature range, due to the large number of battery cells in the power battery pack, the heat exchange medium inlet The temperature regulation effect of the battery cells is better than that of the battery cells at the outlet of the heat exchange medium. The temperature regulation effect of the battery cells far away from the battery case in the power battery pack is poor. Each battery cell in the power battery pack Unbalanced temperature regulation affects the capacity and service life of the power battery pack, thus affecting the performance and cost of the power battery pack

Method used

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  • A power battery pack temperature adjustment device and control system
  • A power battery pack temperature adjustment device and control system
  • A power battery pack temperature adjustment device and control system

Examples

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Embodiment 1

[0043] see Figure 1-16 , the present invention provides a technical solution: a power battery pack temperature adjustment device, comprising a battery box 1, a lower cover 6 of the battery box and an upper cover 7 of the battery box,

[0044] Battery box 1: The battery box 1 is a box structure with two open ends, and a battery box separator 101 is horizontally arranged between the inner walls of the battery box 1; the upper surface of the battery box separator 101 is fixed with a power battery Group 3, and the battery cells of the power battery pack 3 are arranged in a rectangular array; the upper surface of the battery box separator 101 is located on both sides of the power battery pack 3 symmetrically fixed with a plurality of mesh covers 4, the mesh covers 4 It is a cylindrical structure with a sealed top end, and a circulation hole 401 is opened on the mesh cover 4; the area where the circulation hole 401 is opened on the mesh cover 4 is an oil circulation area, and an oi...

Embodiment 2

[0058] see Figure 1-20 , The present invention provides a technical solution: a power battery pack temperature adjustment device, including the power battery pack temperature adjustment device described above, and also includes a circulating pump 11, a liquid storage tank 12, a left oil inlet valve 13, and a right oil inlet. Valve 14, relief valve 15, left oil return valve 16, right oil return valve 17, upper cover oil return valve 18, cooling valve 19, heating valve 30, radiator 31 and heating pipe 32;

[0059] The oil suction port of the circulating pump 11 is communicated with the liquid storage tank 12 through an oil pipeline, and the oil outlet port of the circulating pump 11 is connected to one end of the left oil inlet valve 13 and the right oil inlet valve 14 through two parallel oil pipelines, respectively. The other ends of the oil valve 13 and the right oil inlet valve 14 are connected with the left oil passage hole 604 and the right oil passage hole 605 respective...

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Abstract

The invention discloses a power battery pack temperature regulating device and a control system, comprising a battery box lower cover and a battery box upper cover provided at the upper and lower ends of the battery box, and the two ends of the battery box located outside the power battery pack are symmetrically fixed. A plurality of net covers, with circulation holes on the net covers; the battery box is located at the position corresponding to the net cover, and is connected with a rotating cylinder, and an opening structure is opened on the side wall of the rotating cylinder of the rotating cylinder; the lower cover of the battery box Equipped with an oil flow regulating device, a left oil hole and a right oil hole, the upper cover of the battery box is equipped with an oil conduction device and an oil hole on the upper cover, and the left oil hole, the right oil hole and the upper cover oil The holes are all connected to the external oil circulation pump through the valve body. The invention has the advantages of balanced and consistent temperature regulation of the battery cells in each area of ​​the power battery pack, high temperature regulation efficiency, prolonging the service life of the power battery pack, and has multiple functions. A temperature adjustment mode and other advantages.

Description

technical field [0001] The invention relates to the technical field of power battery pack thermal management, in particular to a power battery pack temperature adjustment device and a control system. Background technique [0002] At present, one of the main uses of power batteries is to provide electrical energy for electric vehicles as an on-board power supply. With the rapid development of the electric vehicle industry, power battery technology has also received extensive attention. Cylindrical battery cells are assembled in series and parallel to form a power battery pack, which is a mainstream structural form of power batteries for electric vehicles. Because power battery packs often require high current charge and discharge, a large amount of heat will be generated. The temperature of the power battery pack rises sharply, and if the temperature is too high, it will affect the charging and discharging performance of the power battery, and even cause dangers such as burn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/26B60L58/27
CPCB60L58/26B60L58/27Y02T10/70
Inventor 李发闯常成郭战永乔林炎朱兴林冯振
Owner 河南工学院